package chapter3;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**
 * @author spencercjh
 * Page110~112 重写线程池中的一些方法
 */
@SuppressWarnings("AlibabaThreadShouldSetName")
public class ExtThreadPool {
    public static class MyTask implements Runnable {
        public String name;

        public MyTask(String name) {
            this.name = name;
        }

        @Override
        public void run() {
            System.out.println("正在执行  " + Thread.currentThread().getId() + " " + name);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        ExecutorService executorService = new ThreadPoolExecutor(5, 5, 0L,
                TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>()) {
            @Override
            protected void beforeExecute(Thread t, Runnable r) {
                System.out.println("准备执行：" + ((MyTask) r).name);
            }

            @Override
            protected void afterExecute(Runnable r, Throwable t) {
                System.out.println("执行完成：" + ((MyTask) r).name);
            }

            @Override
            protected void terminated() {
                System.out.println("线程池退出");
            }
        };
        for (int i = 0; i < 5; i++) {
            MyTask myTask = new MyTask("TASK-GEYM-" + i);
            executorService.execute(myTask);
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        executorService.shutdown();
    }
}
